Solution

Sealed Solution Yul

First name
Yul
School
Northcross Intermidiate
Country
Age
12

I used a guess-and-check method to find my answer. I first listed all the numbers from 0 to 9 on my paper. Every time I added numbers together, I would cross out the two numbers I wrote down to sum them up. My final answer was 3 and 5 for 8